Write fail-safe automation tests, device emulation, and browser automation using Puppeteer’s Google-powered API Key FeaturesGet up and running with Puppeteer and discover best practices for automation testingAutomate your modern web applications using Jest and Mocha with PuppeteerGenerate screenshots using Puppeteer and find out how they can be used for UI regression testsBook Description Puppeteer is an open source web automation library created by Google to perform tasks such as end-to-end testing, performance monitoring, and task automation with ease. Using real-world use cases, this book will take you on a pragmatic journey, helping you to learn Puppeteer and implement best practices to take your automation code to the next level! Starting with an introduction to headless browsers, this book will take you through the foundations of browser automation, showing you how far you can get using Puppeteer to automate Google Chrome and Mozilla Firefox. You’ll then learn the basics of end-to-end testing and understand how to create reliable tests. You’ll also get to grips with finding elements using CSS selectors and XPath expressions. As you progress through the chapters, the focus shifts to more advanced browser automation topics such as executing JavaScript code inside the browser. You’ll learn various use cases of Puppeteer, such as mobile devices or network speed testing, gauging your site’s performance, and using Puppeteer as a web scraping tool. By the end of this UI testing book, you’ll have learned how to make the most of Puppeteer’s API and be able to apply it in your real-world projects. What you will learnUnderstand browser automation fundamentalsExplore end-to-end testing with Puppeteer and its best practicesApply CSS Selectors and XPath expressions to web automationDiscover how you can leverage the power of web automation as a developerEmulate different use cases of Puppeteer such as network speed tests and geolocationGet to grips with techniques and best practices for web scraping and web content generationWho this book is for The book is for QA engineers, testing professionals, and frontend web developers alike who want to perform end-to-end testing using Google's developer tools. Web developers who want to learn how to use Puppeteer for generating content, scraping websites, and evaluating website performance will also find this book useful. Although knowledge of Node.js isn’t necessary, basic JavaScript knowledge will assist with understanding the concepts covered.

A fast-paced, practical guide to helping you leverage React Testing Library to test the DOM output of components Key FeaturesGet to grips with React Testing Library and create tests that don't break with changes in implementationLearn how to put RTL into practice by implementing it in real-world scenariosTest apps to be more accessible and ensure your tests will work with actual DOM nodesBook Description React Testing Library (RTL) is a lightweight and easy-to-use tool for testing the document object model (DOM) output of components. This book will show you how to use this modern, user-friendly tool to test React components, reducing the risk that your application will not work as expected in production. The book demonstrates code snippets that will allow you to implement RTL easily, helping you to understand the guiding principles of the DOM Testing Library to write tests from the perspective of the user. You'll explore the advantages of testing components from the perspective of individuals who will actually use your components, and use test-driven development (TDD) to drive the process of writing tests. As you advance, you'll discover how to add RTL to React projects, test components using the Context API, and also learn how to write user interface (UI) end-to-end tests using the popular Cypress library. Throughout this book, you'll work with practical examples and useful explanations to be able to confidently create tests that don't break when changes are made. By the end of this React book, you will have learned all you need to be able to test React components confidently. What you will learnExplore React Testing Library and its use casesGet to grips with the RTL ecosystemApply jest-dom to enhance your tests using RTLGain the confidence you need to create tests that don't break with changes using RTLIntegrate Cucumber and Cypress into your test suiteUse TDD to drive the process of writing testsApply your existing React knowledge for using RTLWho this book is for This book is for software engineers, quality engineers and React developers who want to learn about modern practices used for testing React components using the latest testing tool, RTL. Basic knowledge of React development is required to get the most out of this book.

This book is a comprehensive guide to frontend web app testing. You'll develop a solid understanding of the advanced features that lead testing frameworks offer and the pillars of a successful web app testing strategy. With this book, you’ll be able to devise a suitable testing strategy using both code coverage and test coverage measurements.

Get to grips with the Cypress framework and learn how to best implement end-to-end automation testing with JavaScript with the help of expert tips, best practices, and real-world testing examples Key FeaturesWrite your first end-to-end test and find out how to modernize your testing environmentExecute test-driven web development and cross-browser testing using CypressDiscover the advantages of using Cypress over Selenium and refactor testing for modern web appsBook Description Cypress is a modern test automation framework for web-based frontend apps. Learning Cypress will help you overcome the shortcomings of conventional testing solutions such as dependency graph problems, the steep learning curve in setting up end-to-end testing packages, and difficulties in writing explicit time waits for your tests. In End-to-End Web Testing with Cypress, you’ll learn how to use different Cypress tools, including time travel, snapshots, errors, and console output, to write fail-safe and non-flaky tests. You’ll discover techniques for performing test-driven development (TDD) with Cypress and write cross-browser tests for your web applications. As you advance, you’ll implement tests for a sample application and work with a variety of tools and features within the Cypress ecosystem. Finally, this Cypress book will help you grasp advanced testing concepts such as visual testing and networking. By the end of this book, you’ll have the skills you need to be able to set up Cypress for any web app and understand how to use it to its full potential. What you will learnGet to grips with Cypress and understand its advantages over SeleniumExplore common Cypress commands, tools, and techniques for writing complete tests for web appsSet up and configure Cypress for cross-browser testingUnderstand how to work with elements and animation to write non-flaky testsDiscover techniques for implementing and handling navigation requests in testsImplement visual regression tests with Applitools eyesWho this book is for This book is for automation testing professionals, software and web testers, and frontend web developers who have intermediate-level JavaScript and beginner-level test automation knowledge, as well as for complete beginners who are looking to get started with Cypress and learn how it works. You’ll also find this book useful if you are a Selenium tester who wants to migrate to Cypress and leverage its capabilities. An intermediate-level understanding of JavaScript programming and beginner-level knowledge of web testing are required.

Master Node.js 22 through expert-led recipes in async programming, app development, Fastify, modules, testing, debugging, and optimization Key Features Explore the latest Node.js 22 features to stay at the forefront of modern development Learn to build, debug, and deploy Node.js applications flawlessly Gain expertise in Fastify Web Framework, Node.js module creation, and advanced testing techniques Purchase of the print or Kindle book includes a free PDF eBook Book DescriptionNode.js is a game-changing technology for building modern web applications and tooling, bringing the power of JavaScript to the server and enabling full-stack development in a unified language. This updated edition of this Node.js cookbook, featuring Node.js 22, equips you with the latest advancements and enhancements in the Node.js framework ecosystem. From Bethany Griggs, who has served on the Node.js Technical Steering Committee and participated in the Node.js Release Working Group, and Manuel Spigolon, a core maintainer of Fastify, comes this fifth edition of the Node.js Cookbook to help you master Node.js 22. This book guides you step by step through crafting reusable code with Node.js modules, streamlining development using the Fastify web framework, and implementing data persistence in databases and rigorous testing practices for robust applications. You’ll address security concerns, optimize performance with worker threads, deploy Node.js microservices using containerization and orchestration, and tackle troubleshooting with effective debugging strategies. Packed with real-world examples, this guide empowers you to harness Node.js 22's full potential for creating secure, performant, and dynamic applications.What you will learn Grasp Node.js' async/sync programming to optimize code execution Build your coding skills from scratch by creating basic Node.js apps Debug and troubleshoot Node.js apps proficiently, ensuring smooth functionality Deploy apps confidently to production, reaching a wider user base Harness Fastify for web development to craft efficient frameworks Develop Node.js modules and enhance code reusability and project structure Who this book is for If you have basic knowledge of JavaScript or another programming language and want to build a solid understanding of Node.js, this book is for you. It provides the foundational knowledge you need to navigate the Node.js and npm ecosystem and start building applications. For readers with some Node.js experience, it offers the opportunity to deepen and expand their skills, while beginners can use practical recipes to quickly acquire a strong foundation in Node.js concepts and features.

Step-by-step guide to understand key concepts for Selenium Automation using examples to shine in your interview for test automation roles DESCRIPTION Software Engineering has taken massive strides with a multitude of technology innovations. With several changes being introduced Ð development of products and their integration into the market Ð understanding of mobile devices and user interface channels across a plethora of platforms is getting complex day by day. In addition, since the process or procedures of software testing for products and applications can become an act of boiling the ocean, the role of test automation is crucial while dealing with such challenges. This book aims to equip you with just enough knowledge of Selenium in conjunction with concepts you need to master to succeed in the role of Selenium Automation Engineer. It is the most widely used test automation tool and a much sought-after automated testing suite, by automation engineers who are equipped with technical expertise and analytical skills, for web applications across different browsers and platforms.ÊÊ The book starts with a brief introduction to the world of automation and why it is important, succinctly covering the history of Selenium and the capabilities it offers. In this book, you will learn how to do simple Selenium-based automation with examples and understand the progressive complexity of some key features. Before diving deep into advanced concepts such as Page Object Models, Test Automation Framework and Cross Browser testing, you will grasp comprehensive knowledge of several concepts related to Java, Python, JavaScript and Ruby programming languages. In addition, concepts on Selenium Web Driver, Grid and use of Selenium Locators, IDEs and tools to build complex test automation framework are also explained with practical examples. Each chapter has a set of key concepts and questions that one may face during interviews.Ê KEY FEATURES Acquire Selenium skills to do independent test automation projects Learn the basics of Selenium Web Driver for test automation using Selenium Understand Page Object Model, including how and when they're used in test automation Understand the approach for building a test automation framework Build Selenium test automation scripts using various languages Ð Java, Python, JavaScript/Node JS and Ruby Learn how to report and integrate with CI tools for test automationÊ Get some professional tips for handing interviews and test automation approach Implement cross-browser testing scenarios using Selenium Grid and commercial tools and services WHAT WILL YOU LEARN By the end of the book, you will find several examples to help ignite your understanding and usage of Selenium across a myriad of languages and frameworks. With this, youÕll be able to put your knowledge to practice and solve real-life test automation challenges such as testing a web site, mobile application and leveraging tools available for fast-tracking your test automation approach. You can also choose to practice additional examples provided in the code bundle of the book to master the concepts and techniques explained in this book. WHO THIS BOOK IS FOR The book is intended for anyone looking to make a career in test automation using Selenium, all aspiring manual testers who want to learn the most powerful test automation framework Ð Selenium and associated programming languages Ð or working professionals who want to switch their career to testing. While no prior knowledge of Selenium, test automation or related technologies is assumed, it will be helpful to have some programming experience to understand the concepts explained in this book.Ê Table of Contents 1. Introduction to Test Automation 2. Introduction to SeleniumÊ 3. Understanding Selenium Architecture 4. Understanding Selenium Tools 5. Understanding Web UIÊ 6. Web UI Automation with Selenium Using Java & Python 7. Selenium Coding with Other Languages Ð Ruby & JavaScript 8. Building a Test Automation Framework with Selenium 9. Advanced Features of Selenium Using Java & Python 10. Cross-Browser Test Automation 11. Tips and Tricks for Test Automation 12. Interview Tips

Learn how to build dynamic web applications with Express, a key component of the Node/JavaScript development stack. In this hands-on guide, author Ethan Brown teaches you the fundamentals through the development of a fictional application that exposes a public website and a RESTful API. You’ll also learn web architecture best practices to help you build single-page, multi-page, and hybrid web apps with Express. Express strikes a balance between a robust framework and no framework at all, allowing you a free hand in your architecture choices. With this book, frontend and backend engineers familiar with JavaScript will discover new ways of looking at web development. Create webpage templating system for rendering dynamic data Dive into request and response objects, middleware, and URL routing Simulate a production environment for testing and development Focus on persistence with document databases, particularly MongoDB Make your resources available to other programs with RESTful APIs Build secure apps with authentication, authorization, and HTTPS Integrate with social media, geolocation, and other third-party services Implement a plan for launching and maintaining your app Learn critical debugging skills This book covers Express 4.0.